Glaciers and Icebergs, Greenland

Combine the world's largest island with a total population of only 55,000 and Greenland provides the perfect backdrop for a true bonding experience with nature. Rent a kayak, originally invented by hunters here, and row arctic waters past towering icebergs and glaciers. The waters provide a home to many whale species, including humpbacks with tails up to 16 feet wide. Outdoor excursion opportunities abound, from mountain climbing to hiking and angling -- just be sure to bundle up! Temperatures range from 20 to 60 degrees Fahrenheit in the summer and much colder in the winter. Experience round-the-clock daylight during the arctic summer or watch the Northern Lights paint dazzling colors across the dark autumn skies.9601280

Combine the world's largest island with a total population of only 55,000 and Greenland provides the perfect backdrop for a true bonding experience with nature. Rent a kayak, originally invented by hunters here, and row arctic waters past towering icebergs and glaciers. The waters provide a home to many whale species, including humpbacks with tails up to 16 feet wide. Outdoor excursion opportunities abound, from mountain climbing to hiking and angling -- just be sure to bundle up! Temperatures range from 20 to 60 degrees Fahrenheit in the summer and much colder in the winter. Experience round-the-clock daylight during the arctic summer or watch the Northern Lights paint dazzling colors across the dark autumn skies.

Great Barrier Reef, Australia

The Great Barrier Reef's vibrant coral and fish form an underwater tropical paradise that promises the best scuba diving and snorkeling in the world. Spanning more than 1,200 miles of crystal waters along the coastline, the reef system is the largest and healthiest anywhere. Its isolation from the mainland will put you one-on-one with marine life, seemingly cut off from human contact. Australia offers countless other natural gems in the raw wilderness of its outback, so after exploring the depths of the sea, you can hop in a four-wheel drive and adventure in a totally different world.9601280

The Great Barrier Reef's vibrant coral and fish form an underwater tropical paradise that promises the best scuba diving and snorkeling in the world. Spanning more than 1,200 miles of crystal waters along the coastline, the reef system is the largest and healthiest anywhere. Its isolation from the mainland will put you one-on-one with marine life, seemingly cut off from human contact. Australia offers countless other natural gems in the raw wilderness of its outback, so after exploring the depths of the sea, you can hop in a four-wheel drive and adventure in a totally different world.

Grand Prismatic Springs, Yellowstone, Wyoming

More than 1,000 miles of backcountry hiking trails through Yellowstone lead travelers to pristine areas rich with extraordinary wildlife and steaming, bubbling hot springs. Your chances at spotting an endangered grizzly or elk are pretty good -- the park is home to the largest elk herd in North America and one of two grizzly bear populations. You'll no doubt leave with everlasting images of the grand sweep of the rugged Teton mountain range and nature's fireworks leaping from the geysers.9601280

More than 1,000 miles of backcountry hiking trails through Yellowstone lead travelers to pristine areas rich with extraordinary wildlife and steaming, bubbling hot springs. Your chances at spotting an endangered grizzly or elk are pretty good -- the park is home to the largest elk herd in North America and one of two grizzly bear populations. You'll no doubt leave with everlasting images of the grand sweep of the rugged Teton mountain range and nature's fireworks leaping from the geysers.

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Redwood National Park, California

Redwood National Park, California

Visitors here cannot help but feel awestruck by the unbelievable enormity of the coast redwoods, the tallest and oldest trees on earth. The tallest redwood on record, known simply as "the Tall Tree," is 600 years old and stands more than 350 feet. These majestic examples of nature, which can only be found in California and Oregon, take 400 years to mature and can live to be 2,000-plus years old. Emerging from the darkened paths on foot, bike or horseback, visitors may be shocked to find it is still daylight, and still the 21st century, in a place where time seems to stand still.9601280

Visitors here cannot help but feel awestruck by the unbelievable enormity of the coast redwoods, the tallest and oldest trees on earth. The tallest redwood on record, known simply as "the Tall Tree," is 600 years old and stands more than 350 feet. These majestic examples of nature, which can only be found in California and Oregon, take 400 years to mature and can live to be 2,000-plus years old. Emerging from the darkened paths on foot, bike or horseback, visitors may be shocked to find it is still daylight, and still the 21st century, in a place where time seems to stand still.

Mt. Everest, Nepal

The Sherpas and Tibetans worship Everest as Chomolongma, or "Mother Goddess of the Earth." Luckily you don't need to actually climb the 29,000 feet to the "Top of the World" to experience its magnificence and the beauty of the surrounding valleys and forests.9601280

The Sherpas and Tibetans worship Everest as Chomolongma, or "Mother Goddess of the Earth." Luckily you don't need to actually climb the 29,000 feet to the "Top of the World" to experience its magnificence and the beauty of the surrounding valleys and forests.

Emerald Landscape, Ireland

Though all of Ireland's landscape is stunning, the southwest region shows visitors at first glance why this is called the Emerald Isle. Lush green pastures stretch as far as the eye can see, and the colorful hills are cut with winding streams. The Lakes of Killarney offer some of the most refreshing natural scenery in the south, which can best be explored by bike or on foot. Take the time to visit the picturesque small towns and villages, like Adare and Kinsale, whose charm and tranquillity will soothe the soul.9601280

Though all of Ireland's landscape is stunning, the southwest region shows visitors at first glance why this is called the Emerald Isle. Lush green pastures stretch as far as the eye can see, and the colorful hills are cut with winding streams. The Lakes of Killarney offer some of the most refreshing natural scenery in the south, which can best be explored by bike or on foot. Take the time to visit the picturesque small towns and villages, like Adare and Kinsale, whose charm and tranquillity will soothe the soul.

Diverse Ecosystem, Costa Rica

Thanks to the biological influences of neighboring North and South America and the Pacific and Caribbean oceans, this small mountainous country is home to one of the most diverse ecosystems on the planet. Thousands of miles of roads and nature trails make it easy to experience the wide spectrum of habitats, from steaming volcanoes to the cloud-shrouded jungles and deserted beaches. A model National Conservation System protects Costa Rica's invaluable natural heritage, including 9,000 different kinds of flowering plants and more species of birds than in the United States, Canada and northern Mexico combined.9601280

Thanks to the biological influences of neighboring North and South America and the Pacific and Caribbean oceans, this small mountainous country is home to one of the most diverse ecosystems on the planet. Thousands of miles of roads and nature trails make it easy to experience the wide spectrum of habitats, from steaming volcanoes to the cloud-shrouded jungles and deserted beaches. A model National Conservation System protects Costa Rica's invaluable natural heritage, including 9,000 different kinds of flowering plants and more species of birds than in the United States, Canada and northern Mexico combined.

Gran Sabana, Venezuela

Located within Canaima, a national park the size of Belgium, Gran Sabana is the plateau region between Venezuela and Brazil. The hauntingly beautiful landscape is dominated by the unique "tepuyes" -- flat-topped mountains with steep vertical walls. Tours by jeep and canoe are popular ways of seeing the most scenic spots, but to get the full experience, guided walking tours are the way to go. The dense jungles house exotic plant life, some 20,000 species of orchid alone, and several species of endangered animals, including jaguars and giant armadillos. The rock is some of the oldest on Earth, dating back two billion years, making it one of the nine most ancient geological regions of the world.9601280

Located within Canaima, a national park the size of Belgium, Gran Sabana is the plateau region between Venezuela and Brazil. The hauntingly beautiful landscape is dominated by the unique "tepuyes" -- flat-topped mountains with steep vertical walls. Tours by jeep and canoe are popular ways of seeing the most scenic spots, but to get the full experience, guided walking tours are the way to go. The dense jungles house exotic plant life, some 20,000 species of orchid alone, and several species of endangered animals, including jaguars and giant armadillos. The rock is some of the oldest on Earth, dating back two billion years, making it one of the nine most ancient geological regions of the world.

Desert Sand Dunes, South Africa

The southern states of Africa have been the most successful in not only conserving its diverse wildlife, but also in offering visitors the privacy and isolation of intimate camps apart from the mass tourism more common in the north. You'll surely want to plan a safari in one of these regions where more than 90% of the continent's rhinos and the largest herds of elephants can be found. Africa's stunning landscape of coastal cliffs, enormous desert sand dunes and magnificent waterfalls have been shaped by over four billion years of geological activity.9601280

The southern states of Africa have been the most successful in not only conserving its diverse wildlife, but also in offering visitors the privacy and isolation of intimate camps apart from the mass tourism more common in the north. You'll surely want to plan a safari in one of these regions where more than 90% of the continent's rhinos and the largest herds of elephants can be found. Africa's stunning landscape of coastal cliffs, enormous desert sand dunes and magnificent waterfalls have been shaped by over four billion years of geological activity.

Galapagos Islands

A trip to these enchanted islands puts humans in a unique and humbling second-place position to the untamed plant and animal life. Here we are mere visitors to the inhabitants of the protected national park that covers 97% of the land area. The islands were named after the giant tortoises that bask boldly on the sandy beaches and mingle with their reptilian brethren, most notably the marine iguana -- the only aquatic iguana in the world. Birds are the most diverse and abundant on the islands, many having evolved into unique species that can only be found here.9601280

A trip to these enchanted islands puts humans in a unique and humbling second-place position to the untamed plant and animal life. Here we are mere visitors to the inhabitants of the protected national park that covers 97% of the land area. The islands were named after the giant tortoises that bask boldly on the sandy beaches and mingle with their reptilian brethren, most notably the marine iguana -- the only aquatic iguana in the world. Birds are the most diverse and abundant on the islands, many having evolved into unique species that can only be found here.

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Yosemite National Park, California

The setting sun illuminates El Capitan monolith in frozen Yosemite National Park. A favorite for advanced rock climbers, "The Chief" is the world's largest solid granite block, rising an awe-inspiring 3,500 feet above the ground.9601280

The setting sun illuminates El Capitan monolith in frozen Yosemite National Park. A favorite for advanced rock climbers, "The Chief" is the world's largest solid granite block, rising an awe-inspiring 3,500 feet above the ground.

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Multnomah Falls, Oregon

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After an ice storm, freezing cold water continues to plummet an impressive 620 feet into the Columbia River. Visitors can take in the spectacular view from the Benson Bridge, built in 1914 for scenes like this one.9601280

After an ice storm, freezing cold water continues to plummet an impressive 620 feet into the Columbia River. Visitors can take in the spectacular view from the Benson Bridge, built in 1914 for scenes like this one.

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Yellowstone National Park, Wyoming

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Snow coats the ground around the Belgian Pool, a hot spring in the Upper Geyser Basin of Yellowstone National Park. You can look, but don't get too close! Originally named Oyster Spring, the natural wonder was renamed after a Belgian visitor who fell into it in 1929 and suffered fatal thermal burns.9601280

Snow coats the ground around the Belgian Pool, a hot spring in the Upper Geyser Basin of Yellowstone National Park. You can look, but don't get too close! Originally named Oyster Spring, the natural wonder was renamed after a Belgian visitor who fell into it in 1929 and suffered fatal thermal burns.

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Bryce Canyon National Park, Utah

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A snowy shot of Bryce Canyon's hoodoos, tall rock structures that form from water, wind and ice erosion.

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St. Joseph Lighthouses, Michigan

St. Joseph Lighthouses, Michigan

The St. Joseph Lighthouses attempt to withstand the elements on frozen Lake Michigan. The 2 lighthouses were built in the early 1900s, and the outer light is one of the oldest on the lake. 9601280

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Coyote Buttes, Arizona

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Jack Frost puts an icy touch on "The Wave," an incredible sandstone rock formation in Coyote Buttes North, a section of the Paria Canyon-Vermilion Cliffs Wilderness. In order to preserve the spectacular sight, only 20 hikers (with permits) per day are allowed to visit.9601280

Jack Frost puts an icy touch on "The Wave," an incredible sandstone rock formation in Coyote Buttes North, a section of the Paria Canyon-Vermilion Cliffs Wilderness. In order to preserve the spectacular sight, only 20 hikers (with permits) per day are allowed to visit.